Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3a466ebbd9fb48…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 03:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad5e5cdac43cd74646122ec47ee98f05 SHA-1: bcd3934aeddd776b1cf923118fa33a0ad3c8ea18 SHA-256: ca3a466ebbd9fb4803558717fcd32cfb636e5a762328a742952197e704706892
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, many of which are part of a link farm. One of these links, https://ttraff.cc/pify?keyword=aarti+mata+ki+pdf, points to known malicious redirector infrastructure. The document body contains garbled text and what appears to be metadata from the wkhtmltopdf tool, suggesting it was programmatically generated rather than containing user-readable content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=aarti+mata+ki+pdf In PDF document text
    • http://zoger.abishealthbeauty.com/uploads/1/3/2/3/132303382/jajupevitewil-tazofad-pugofavuka.pdfIn PDF document text
    • http://files.torontobelts.com/uploads/1/3/2/6/132696171/furedasoxiferaj_xuwoli_pelapog.pdfIn PDF document text
    • http://files.climatizetennessee.com/uploads/1/3/1/0/131069789/4887c823cc366.pdfIn PDF document text
    • http://files.goevangelismos.com/uploads/1/3/1/4/131408103/ludebewita.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6943/9141/files/tratamento_da_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/pamakodugonor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5645/5067/files/5963177812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2093/files/diwenogolixekuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4018/7303/files/pitirobalovijunululugez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/vimazovutalezabanedut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4068/1633/files/binary_search_tree_c_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6365/files/sitativogogazuwusofinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/xurebajipiremojepexizegiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8472/files/batubosedopobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8774/1607/files/13347150650.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 5028 bytes
SHA-256: 422f49280af61b9222011c413e71aaa20215f49f3f556bd0d8f346701aa3fd6c
font_01_sfnt_off000070a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A3 13548 bytes
SHA-256: ddc521e0e9b841ef98f57d4445bec79f45c2f843240b710926e22788303abb13
font_02_sfnt_off00009bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD4 3688 bytes
SHA-256: 8b5d51327905dac5b755c8de855f35b2b6cf71bb2f073ce976c220a247b1c4e1

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